I agree with your sentiment in general: we should not make assumptions about the parameters of others' relationships.

But in this case, Huang himself explicitly mentioned the hurt that he caused his family. I don't think it gets much clearer than this.

    I owe my family and all of you an apology.

    I was unfaithful to my wife. My actions hurt her and 
    our children. There is no excuse for what I did. I am 
    deeply sorry.

    Throughout my life, my family has given me love and 
    support. They deserve my honesty and loyalty. Instead, 
    I let them down and damaged the life we built together. 
    I take full responsibility for what I did and the hurt I 
    caused, and I accept the criticism that comes with it.

    To my wife and family: I love you. I know an apology 
    cannot undo what I have done. I hope our family will heal 
    and that, over time, I can earn back your trust.